Wednesday
April 16, 2014

Homework Help: Algebra

Posted by Sara on Thursday, July 19, 2007 at 9:26pm.

(3x^2+2)/(x^2-4)-(9x-x^2)/(x^2-4)

Your problem:

(3x^2+2)/(x^2-4)-(9x-x^2)/(x^2-4)

Since the denominator is the same, just subtract the numerator:

(3x^2 + 2 - 9x + x^2)/(x^2 - 4) -->remember to use the distributive property with the negative over the terms in the numerator of the second fraction.

Combine like terms:
(4x^2 - 9x + 2)/(x^2 - 4)

Can we factor to reduce this fraction? Yes.

(4x - 1)(x - 2)/(x + 2)(x - 2)

Can you take it from here to reduce this fraction? (Hint: cancel out the same factors in both the numerator and denominator to reduce.)

I hope this will help.

thank you sooo much. now I know what I did wrong. First I got 2x^2 instead of 4x^2 and then I couldn't manage tpfactor because I didn't see were the nine would fit in. Thanks you for the help!

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Algerbra 1 - 1/3x + 5/6 = 2/9x - 1/3 How do I solve this to get the answer? For ...
COLLEGE CALCULUS. HELP! - Let f(x)=(-3x^2+6)^4(9x^2+7)^14, Find f'(x). f'(x)= (-...
Algebra - (3x+4)/(3x-4)+(3x-4)/(3x+4) --------------------------- Divide top by ...
Algebra (Re.: Reiny) - The fact that there was that nice symmetry to the ...
Math - Find the horizontal asymptote, if any, of the graph of the given function...
Math - Find the horizontal asymptote, if any, of the graph of the given function...
derivative - I am finding the second derivative of (x^2)(y^3) = 1 2x(y^3) + (x^2...
Math(Please Help) - x-2 6x ____ - _____ 3x+4 x+1 *You are supposed to simplify ...
Intermediate Algebra - Andrews factored expressions -6x63+9x^2-3x as -3x(2x^2-3x...
Derivative Calculus - I just need my answers checked. 1) Find the derivative. f(...

Search
Members